In Warhammer 40,000 Space Marine you are Captain Titus, a Space Marine of the Ultramarines chapter and a seasoned veteran of countless battles.
A millions-strong Ork horde has invaded an Imperial Forge World, one of the planet-sized factories where the war machines for humanitys never ending battle for survival are created. Losing this planet is not an option, but a darker and far more evil threat is lurking large in the shadows of this world.
With an Imperial liberation fleet en-route, the Ultramarines are sent in to hold key locations until reinforcements arrive. Captain Titus and a squad of Ultramarine veterans use bolter and chainsword to take the fight to the enemies of mankind.
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